For those of you who are interested in a tiny, safe, static file server that provides secure, public URLs from any machine (ngrok-style), I have a simple project called srvdir that will probably be useful to you: https://srvdir.net
Nice, but the writing suggests that it's secure as in end-to-end encryption, what people expect from HTTPS, while in fact you tunnel everything in plain through a central server. You should make this clear on the site.
